Safety Design Touch The Power Button for 5 Seconds to Turn on The door frame pull up bar. When the chin up bar is loosely installed or tilted, the smart panel will continuously emit an alarm sound. When correctly installed, it can support a weight of up to 550 lbs. Heavy Duty The strength training pull-up bars is constructed from carbon steel, which is more durable and robust than regular steel, preventing sudden deformation and capable of withstanding instantaneous loads of up to 1600 lbs, meeting a safety factor of 2.5. Digital Display The multi-functional display shows time, count, and calories. It can sequentially display all the measurements, making it easier for you to understand your workout journey.